| x | − | ( | x | × | 1 25 | × | 1 2 | ) | − | x | ( | 1 | − | 1 10 | × | 1 5 | ) | = | 5 |
| Left side of the equation = | x | − | x | × | 1 25 | × | 1 2 | − | x | ( | 1 | − | 1 10 | × | 1 5 | ) |
| = | x | − | x | × | 1 50 | − | x | ( | 1 | − | 1 10 | × | 1 5 | ) |
| = | 49 50 | x | − | x | ( | 1 | − | 1 10 | × | 1 5 | ) |
| = | 49 50 | x | − | x | × | 1 | + | x | × | 1 10 | × | 1 5 |
| = | 49 50 | x | − | x | × | 1 | + | x | × | 1 50 |
| = | - | 0 | x |
| - | 0 | x | = | 5 |
| = | 5 | + | 0 |